let i
<template>
  <div class="dashboard-line-box">
    <div class="dashboard-line-title">访问趋势</div>
    <div ref="echart" class="dashboard-line" />
  </div>
</template>
<script setup>
import * as echarts from "echarts";
import { nextTick, onMounted, onUnmounted, ref, shallowRef } from "vue";
// import 'echarts/theme/macarons'

var dataAxis = [];
for (let i = 1; i < 13; i++) {
  dataAxis.push(`${i}月`);
}
var data = [220, 182, 191, 234, 290, 330, 310, 123, 442, 321, 90, 149];
var yMax = 500;
var dataShadow = [];

// eslint-disable-next-line no-redeclare
for (let i = 0; i < data.length; i++) {
  dataShadow.push(yMax);
}

const chart = shallowRef(null);
const echart = ref(null);
const initChart = () => {
  chart.value = echarts.init(echart.value /* 'macarons' */);
  setOptions();
};
const setOptions = () => {
  chart.value.setOption({
    grid: {
      left: "40",
      right: "20",
      top: "40",
      bottom: "20",
    },
    xAxis: {
      data: dataAxis,
      axisTick: {
        show: false,
      },
      axisLine: {
        show: false,
      },
      z: 10,
    },
    yAxis: {
      axisLine: {
        show: false,
      },
      axisTick: {
        show: false,
      },
      axisLabel: {
        textStyle: {
          color: "#999",
        },
      },
    },
    dataZoom: [
      {
        type: "inside",
      },
    ],
    series: [
      {
        type: "bar",
        barWidth: "40%",
        itemStyle: {
          borderRadius: [5, 5, 0, 0],
          color: "#188df0",
        },
        emphasis: {
          itemStyle: {
            color: "#188df0",
          },
        },
        data: data,
      },
    ],
  });
};

onMounted(async () => {
  await nextTick();
  initChart();
});

onUnmounted(() => {
  if (!chart.value) {
    return;
  }
  chart.value.dispose();
  chart.value = null;
});
</script>
<style lang="scss" scoped>
.dashboard-line-box {
  .dashboard-line {
    background-color: #fff;
    height: 360px;
    width: 100%;
  }
  .dashboard-line-title {
    font-weight: 600;
    margin-bottom: 12px;
  }
}
</style>
